Power side mirror help

[sbrown02]

My Yukon XL Denali side passenger mirror also will not fold in and out now. And helping it along while the motor is engaged doesn't fix the problem. The post above said it costs $500 for the entire mirror assembly. I found this (see link below) for much less (about $145), are they the same thing? Hard to believe a mirror assembly would be $500.

Thanks

http://www.1aauto.com/mirror-passenger-side-paint-to-match/i/1amre02530?f=694391&y=2007

Anybody have any ideas/suggestions on this? If possible I'd like to fix this myself without taking it to the dealer. Are there any good write-ups (with pictures) of taking apart the side mirror housing assembly and replacing the gears (assuming that's what's wrong) or just replacing the whole mirror? Also, was the link I posted above correct for buying the whole passenger side mirror? Are the motors for the side mirrors built in, so there's one motor for the driver side mirror and a different motor for the passenger side mirror?

Sorry for all the questions. Just trying to understand and troubleshoot this.

Thanks

 

[1974chevyglasshouse]

Those are after market, u can look floor used for about same price

 

[Keanen55]

I have order parts from them off Ebay. Their stuff is pretty good quality. I say go for the new parts over used!

 

[strathbogie]

Questions: what's a dl3? How do I tell which maker made the passenger side mirror? Or does it matter? And last, if Chev installs my mirror, what will be the likely charge?
Appreciate the help. OH. It's an 09 Tahoe Z71 4wd white, stock as far as I can tell.